Re: performance in a small cluster

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Hi,

Am 29.05.19 um 11:19 schrieb Martin Verges:
> 
>     We have identified the performance settings in the BIOS as a major
>     factor
> 
> could you share your insights what options you changed to increase
> performance and could you provide numbers to it?

Most default perfomance settings nowadays seem to be geared towards
power savings. This decreases CPU frequencies and does not play well
with Ceph (and virtualization).

There was just one setting in the BIOS of these machines called "Host
Performance" that was set to "Balanced". We changed that to "Max
Performance" and immediately the throughput doubled.

Regards
-- 
Robert Sander
Heinlein Support GmbH
Linux: Akademie - Support - Hosting
http://www.heinlein-support.de

Tel: 030-405051-43
Fax: 030-405051-19

Zwangsangaben lt. §35a GmbHG:
HRB 93818 B / Amtsgericht Berlin-Charlottenburg,
Geschäftsführer: Peer Heinlein  -- Sitz: Berlin

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